[ 3.036172] ------------[ cut here ]------------ [ 3.036269] refcount_t: underflow; use-after-free. [ 3.036345] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 3.036437] Modules linked in: sch_fq [ 3.036493] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 3.036591] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 3.036657] Workqueue: netns cleanup_net [ 3.036702] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 3.036760] Code: 9b e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 d5 9b e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5 [ 3.036945] RSP: 0018:ffffb80200257d50 EFLAGS: 00010286 [ 3.037003] RAX: 0000000000000000 RBX: ffffb80200257d60 RCX: 00000000ffffdfff [ 3.037081] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 3.037162] RBP: ffffb80200257858 R08: ffffffff9c55ba28 R09: 00000000ffffdfff [ 3.037241] R10: ffffffff9c47ba40 R11: ffffffff9c52ba40 R12: dead000000000122 [ 3.037317] R13: 00000000fffb777a R14: 0000000000000001 R15: ffff99e24593d000 [ 3.037397] FS: 0000000000000000(0000) GS:ffff99e2e1f91000(0000) knlGS:0000000000000000 [ 3.037481] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.037548] CR2: 00000000004a00a4 CR3: 0000000005819005 CR4: 0000000000772ef0 [ 3.037627] PKRU: 55555554 [ 3.037652] Call Trace: [ 3.037678] [ 3.037709] netdev_run_todo+0x21a/0x550 [ 3.037756] ops_undo_list+0x1e3/0x1f0 [ 3.037804] cleanup_net+0x1b7/0x300 [ 3.037849] process_one_work+0x162/0x380 [ 3.037899] worker_thread+0x299/0x3c0 [ 3.037946] ? rescuer_thread+0x4c0/0x4c0 [ 3.037991] kthread+0x101/0x1f0 [ 3.038037] ? kthreads_online_cpu+0x110/0x110 [ 3.038090] ? kthreads_online_cpu+0x110/0x110 [ 3.038146] ret_from_fork+0x11c/0x140 [ 3.038195] ? kthreads_online_cpu+0x110/0x110 [ 3.038253] ret_from_fork_asm+0x11/0x20 [ 3.038300] [ 3.038332] ---[ end trace 0000000000000000 ]---